11668037728 has 12 divisors (see below), whose sum is σ = 22971449340. Its totient is φ = 5834018848.

The previous prime is 11668037713. The next prime is 11668037761. The reversal of 11668037728 is 82773086611.

It is a happy number.

It is a super-2 number, since 2×11668037728² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182313058 + ... + 182313121.

It is an arithmetic number, because the mean of its divisors is an integer number (1914287445).

Almost surely, 2^11668037728 is an apocalyptic number.

It is an amenable number.

11668037728 is a deficient number, since it is larger than the sum of its proper divisors (11303411612).

11668037728 is an equidigital number, since it uses as much as digits as its factorization.

11668037728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364626189 (or 364626181 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 11668037728 in words is "eleven billion, six hundred sixty-eight million, thirty-seven thousand, seven hundred twenty-eight".